On April 22, according to 4E monitoring, Trump once again lashed out at Federal Reserve Chairman Powell and threatened the independence of the Federal Reserve, triggering market concerns about the decline in the credibility of the US dollar and the decline in the U.S. economy. U.S. stocks suffered a "Black Monday" on Monday, and the three major stock indexes fell sharply: the Dow closed down 2.48%, the Nasdaq fell 2.55%, and the S & P 500 fell 2.36%. Technology stocks collapsed across the board. Tesla fell more than 5%, Nvidia fell more than 4%, and the total market value of the "Big Seven" U.S. stocks evaporated by US$404.6 billion. The encryption market decoupled and U.S. stocks bucked the trend. Bitcoin has been rising since early trading yesterday. In the evening, Strategy announced that it would spend US$556 million to buy another 6,556 bitcoins (an average price of 84,785), boosting market sentiment and remaining stable at 87,000 despite the sharp decline in U.S. stocks. Bitcoin rose rapidly again this morning, reaching a high of US$88,877, setting a new high in a month, with a 24-hour increase of 1.42%. Bitcoin is sucking blood in the encryption market, and altcoins are generally under pressure. Ethereum fell below US$1600, down 3.%; SOL reported $138.75, a decline of 1.72% in the past 24 hours. Trump's continued attack on the Federal Reserve worries investors. Although low interest rates are good for the stock market in the short term, the loss of the Federal Reserve's independence may weaken its long-term ability to control inflation, threaten the dollar's status as the world's safest asset, and shake the foundation of the U.S. economy. The market is highly vigilant and risk aversion has surged.